1、BRITISH STANDARD BS 5550-2.11.1: 1978 ISO 3647:1976 Cinematography Part 2: 16 mm film Section 2.11 Spindles Subsection 2.11.1 Specification for dimensions of spindles for16mm motion-picture camera and projector spools UDC 778.5.068.25:621.798.114BS5550-2.11.1:1978 This British Standard, having been
2、prepared under the directionof the Cinematograph Standards Committee, was published under the authority ofthe Executive Board on 31March 1978 BSI 10-1999 The following BSI references relate to the work on this standard: Committee reference CMS/28 Draft for comment 75/71548 ISBN 0 580 10085 5 Coopera
3、ting organizations The Cinematograph Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government department and scientific and industrial organizations: Association of Cinematograph, Television and Allied Technicians* Briti
4、sh Broadcasting Corporation* British Film Institute* British Kinematograph, Sound and Television Society* British Photographic Manufacturers Association Cinematograph Exhibitors Association of Great Britain and Ireland Film Laboratory Association Film Production Association of Great Britain Health a
5、nd Safety Executive Illuminating Engineering Society Independent Television Companies Association Royal Photographic Society* The organizations marked with an asterisk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this Br
6、itish Standard: Association of Independent Cinemas British Amateur Cinematographers, Central Council Department of Education and Science Lighting Industry Federation Limited National Association of Theatrical, Television attention is especially drawn to the following. Where the words “International
7、Standard” appear, referring to this standard, they should be interpreted as “British Standard”. Cross-references. The following International Standards are referred to in the text and for each there is a corresponding British Standard; these are as listed below: A British Standard does not purport t
8、o include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. International Standard Corresponding British Standard ISO 1793:1975 BS 5550:Su
9、bsection .* (currently BS2014:1960 corresponds) ISO 1019:1975 BS 5550 Cinematography Subsection 2.8.1 Dimensions of daylight loading spools for16mm motion-picture cameras* (identical) Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, pages1 to4, an inside b
10、ack cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS5550-2.11.1:1978 BSI 10-1999 1 1 Scope and field of application This InternationalStandard specifies the
11、 dimensions and characteristics of16mm camera and projector reel spindles. 2 References ISO 1019, Cinematography Spools, daylight loading type for16mm motion-picture cameras Dimensions. ISO 1793, Cinematography Reels for16mm motion-picture projectors (up to and including120m capacity:18cm size) Dime
12、nsions. 3 Dimensions The dimensions shall be as shown in the Figure and given in theTable. Figure 16 mm camera and projector spindlesBS5550-2.11.1:1978 2 BSI 10-1999 Table Dimensions Dimension Camera spindles Projector spindles minimum maximum minimum maximum mm in mm in mm in mm in C a(see note 1)
13、7,87 b 0.310 b 8,00 0.315 7,87 b 0.310 b 8,00 0.315 E (see A.1) 0,25 0.010 0,25 0.010 G 2,5 0.10 15,5 0.61 2,5 0.10 16,8 0.66 K a(see note 3) 16,0 0.63 24,5 0.96 16,0 0.63 24,5 0.96 P (seeA.1) 0,65 0.026 4,0 0.16 Q (see note 4 andA.1) 0,15 0.006 0,13 0.005 R (see note 4 andA.1) 2,0 0.08 2,0 0.08 S (
14、see note 4 andA.1) 16,00 0.630 18,03 0.710 T (see note 4 and A.1) 19,0 0.75 22,0 0.87 NOTE 1Dimension C represents the diameter of the round portion of the shaft excluding the locking means. This dimension also specifies the length of the sides of the square portion of the spindle. The maximum value
15、 in each case applies to any point along the length of the shaft while the minimum value only applies to the areas limited by dimensions Q, R, S and T. NOTE 2The edges of the square portion of the spindle should be rounded with a radius of0,25mm (0.010in) minimum to0,50mm(0.020in) maximum to prevent
16、 difficulty in reel positioning. NOTE 3Some projector spindle reel supports and possibly some camera spindle spool supports have been as large as K =25,4mm(1.00in). This Figure corresponds exactly with the minimum diameter of the spool and reel flange “clear area” assigned in ISO1019 and ISO1793. NO
17、TE 4The zones dimensioned by Q, R, S and T illustrated by cross-hatching on the Figure represent the spindle shaft areas on which the spool or reel flange rest (seeA.2). NOTE 5The shape and action of the device for locking reels on spindles is optional, but it should be located outside the area wher
18、e spools or reels are located on the spindles. Overall thickness of spools or reels in the vicinity of the spindle hole is given in ISO1019, and ISO1793, as dimensions J and J 1=mm for spools, and 20,0 0,5mm (0.79 0.02in) for reels. a Dimensions C and K are diameters, however, dimension C is also th
19、e side of the square portion. b Applies only to zones defined by dimensions Q, R, S and T. 18,5 0 0,4 (0.73 0 0.02 in)BS5550-2.11.1:1978 BSI 10-1999 3 Annex A A.1 Where only maximum or minimum values for a dimension are given, it is because the particular dimension is used to specify a function and
20、to achieve interchangeability, and not to dictate design. While dimensions given only as a maximum can obviously go to zero, and while dimensions given only as a minimum can obviously become very large, it is understood that designers will utilize established engineering practice in the dimensioning
21、 of equipment covered by this International Standard. A.2 A minimum shaft diameter has been specified for the Q, R, S and T dimensioned areas to help prevent loose fit of the spool on the spindle and resultant tilt of, or noise from, the spool.4 blankBS5550-2.11.1:1978 BSI 10-1999 Publications refer
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